Steam-boiler.



J. & A. NIGLAUSSE.

STEAM BOILER.

APPLICATION FILED NOV. 21, 1910.

Patented Apr. 14, 1914,

4 BHEBTS-SHEET 1.

J. & A. NIGLAUSSE.

STEAM BOILER. I

APPLICATION FILED NOV. 21I 1910.

1,093,067. Patented Apr. 14, 1914.-

4 SHEETS-SHEET 2.

J. & A. NIGLAUSSE.

STEAM BOILER.

APPLICATION FILED NOV. 21, 1910.

Patented Apr. 14, 1914.

4 SHEETSSHEET 3.

I. &- A. NIGLA'USSE} STEAM BOILER.

APPLI'OATION FILED NOV. 21, 1910.

Patented Apr. 14, 1914.

'tional plan on the line D--D, Fig.

UITED STATF rrcn.

STEAM-BOILER.

Specification of Letters Patent.

Application filed November 21, 1910.

Patented Apr. 14, 1914:. Serial No. 593,495.

To aZZ whom it may concern:

Be it known that we, JULns NIGLAUSSE and ALBERT NICLAUSSE, of 2st Rue des Ardennes, Paris, France, engineers, have invented a new and useful Improvement in Steam-Boilers, which improvement is fully set forth in the following specification.

This invention relates to steam boilers, and particularly to tubular steam boilers.

The purpose of the said invention is to arrange the boilers in. such a way that the steam-generating tubes which are most exposed to the flames of the fire or other source of heat are fed only with water which has already received a sufficient degree of purification, whereby the danger of deterioration of the steam-generating tubes is greatly reduced. For this purpose, an apparatus embodying our invention involves a construction in which the return of the water is effected by one or several collectors, the lower part of which communicates with other c ollectors, while the upper part of the water return collector opens into a second compartment of the receiver which contains water already purified by its passage through the upper nest of tubes. The particular means for this purpose will be pointed out in the specification, and then particularly pointed out in the claims. In practice and for boilers of ordinary dimensions a single return water collector is sufficient.

The annexed drawings show by way of example, one way of carrying out the present invention.

Figure 1 is a longitudinal section on the line AA, Fig. 3. Fig. 2 is a longitudinal section on the line B-B, Fig. 3. Fig. 3 is a front elevation. Fig. 4 is a sectional plan on the line CC, Fig. 1. Fig. 5 is a see- Fig. 6 is a diagrammatic perspective view, indicating the manner of circulation of the water.

Under our invention the feed water is fed to the boiler by pipe a, the water from the pipe entering the compartment D of the receiver D. This compartment D,, as shown in Figs. 1, 2 and 3, is closed off against the rear part of the receiver D and is provided with an upper curved deflecting flange and at its lower portion is bowl-shaped, the edge of the bowl-shaped portion being such as to allow the water to flow over into the main receiver when it has attained acertain level in the bowl-shaped bottom. From the bottom of the receiver extend a series of four collector tubes, Z m n 0 and a middle tube 2, the receiver D as well as the tubes Z m a and 0' being divided oif into two compartments, each by a partition 9 as shown in Figs. 1. 2, and 4. The section of Fig. 1 is taken through the tube 172, while the section of Fig. 2 is taken through the central collector tube 2). The collector tubes Z or n and 0 each communicate with an upper and lower stack of steam pipes, these stacks being designated respectively as F and F Each of these stacks is formed of an assemblage of pairs of concentric tubes 7' and 7' an annular space f being formed between the inner and outer tubes. The inner tubes, be it noted, are open at their outer righthand extremities at 7. As shown in Fig. 1, the outer compartment f of the collector tubes Z m n and 0 are partitioned off transversely by a partition or diaphragm L so as to cut off the communication between the stacks F and F,, by way of these collector tubes. The collector tubes Z m a and 0 communicate with the central collector tube 7) by means of passages or ports .9- which lead into the horizontal collecting chamber r, (see Figs. 1, 2, 3 and 6), said horizontal collecting chamber 7' communicating in turn with the central collector tube 7) by a pipe 8, as shown in Figs. 2 and 3. As will be noted from an inspection of Fig. 2, the pipe .9 extends downwardly into a chamber below the horizontal collector r as shown at g, so as to form a water seal at this point. As shown in Fig. 2, the outer compartment f of the central collector tube 7) extends upwardly into the receiver D so as to prevent the communication of the said collector tube with the water in the said receiver.

The boiler thus constructed operates as follows: The feed water enters the boiler by the pipe at, and is received in the compartment D, whence it flows over into a part of the compartment D at the left of the partition 9, whence the water flows throughthe compartment 7 of the collector tubes Z m a and 0 into the tubes of all of the upper stacks F (see Fig. 1), passing first through the central tubes f and returning to the left through the annular space f between the said inner tubes f and the outer tubes f into the inner compartment 6 of the said collector tubes Z m n and 0. At this point the steam which has been formed separates from the water and passes up through the water in the chamber D being collected in the dome, while the preheated water descends through the compartment Z) into the outer lower stacks F taking in this case a reverse course, that is to say, passing first through the annular spaces f between the inner and outer tubes f and f and thence back to the left through the inner tubes f to the po-rtionsof the compartments f of the collector tubes Z m n and 0 below the parti tion L. From this point the water passes through the pipes or ports .9 into the horizontal collector tube 0, and thence by means of the pipes 8 into the outer compartment f of the central collector tube 79, whence it passes through the two central stacks F and F,, (see Fig. 2) from which the steam passes up into the receiver 1),, by way of the inner compartment f as indicated by the arrows in Figs. 2 and- 6.

The invention may be characterized by stating that from the vaporizing element I is detached a portion which is coupled in parallel with a detached portion of the vaporizing element l3" in such a manner as to form a third vaporizing element which is fed solely with water purified by its passage through the element F which latter serves as a return pipe to feed purified water to the vaporizing element F,.

What we claim and desire to secure by Letters Patent is 1. In a steam boiler,'a feed water compartment, a stack of steam-generating tubes and a communicating passage between the same, in combination with a steam-collector also communicating with said tubes, a stack of steam-generating pipes arranged between the same and the heating medium and a communicating passage connecting the steamcollector with the latter stack, and a com- Copies municating duct arranged between the said communicating passages.

2. In a steam boiler a feed water compartment, a stack of steam generating tubes and a series of communicating passages between the same, in combination with a steam-collector also communicating with said tubes, a second stack of steam-generating tubes arranged between the same and the heating medium, and a further communicating pas sage connecting the steam-collector with a portion of the two stacks, and a duct arranged betw-een the latter passage and the first named passages, whereby a third steamgenerating element is fed solely with water purified by its passage through the first stack of tubes.

3. In a steam boiler, a feed water compartment, a stack of steam-generating tubes and a series of communicating passages between the same, in combination with a steamcollector also communicating with said tubes, a second stack of steam-generating tubes arranged between the same and the heating medium, and a further communicating passage connecting the steam-collector with a portion of the two stacks, a stand pipe arranged in the steam-collector and communicating with the same, and a duct arranged between the latter passage and the first named passages, whereby a third steamgenerating element is fed solely with water purified by its passage through the first stack of tubes.

In testimony whereof we have signed this specification in the presence of two subscribing witnesses.

JULES NICLAUSSE. ALBERT NIGLAUSSE.

Witnesses H. G. Goxn, F. CoMBs.

of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

